Product Data Sheet Show all documents

SikaGrout® Ultra

FLOWABLE, ~100MPA ULTRA HIGH STRENGTH CEMENTITIOUS GROUT

SikaGrout®-Ultra is a ready mixed, high quality cement grout that expands in two stages (class A and C) to counteract the shrinkage normally associated with Portland cement grouts. SikaGrout®-Ultra is a blend of Portland cement, carefully selected and graded aggregates and Sika Admixtures, enabling it to be self levelling and achieve very high strengths in short times, making SikaGrout-Ultra suitable for critical grouting applications in the most demanding of circumstances.

  • Self levelling capabilities
  • Shrinkage compensated
  • High early strengths - 35 MPa in 24 hours
  • High 28 day strengths – greater than 100 MPa
  • Does not segregate or bleed
  • High impact and thermal resistance
  • Non corrosive to steel or iron
Product Data Sheet Show all documents

Usage

  • Grout projects requiring 100MPa compressive strengths
  • Static load grouting
  • Machine base plates
  • Anchor bolting
  • Bridge bearing pads
  • Pre-cast concrete sections
  • Shear Key Grouting
 

Advantages

  • Self levelling capabilities
  • Shrinkage compensated
  • High early strengths - 35 MPa in 24 hours
  • High 28 day strengths – greater than 100 MPa
  • Does not segregate or bleed
  • High impact and thermal resistance
  • Non corrosive to steel or iron

Packaging

20kg bags

Colour

Grey Cementitious Powder

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

Department of Main Roads Qld (TMR) 2019, Product Index for Bridges and Other Structures, Section 5. Registered and Conforming Products, 5.33 Repair Materials (Concrete) – Grouts
Product Information

Shelf life

9 months from date of manufacture.

Storage conditions

Store product in Dry conditions out of direct sunlight

Maximum grain size

Maximum particle size for pumping ~2.0mm

 

Density

~ 2,200 kg/m3 approx. (dependent on water addition rate)
Technical Information

Compressive strength

1 day

~ 40 MPa

7 days

~ 80 MPa

28 days

~ 100 MPa

Material and curing conditions at 23°C / 50% r.h.
Above results based on 50x50mm cube @ 2.7 litres water per 20kg bag

Tensile strength in flexure

28 days

13 MPa

Splitting tensile strength

28 days

7.5 MPa

Expansion

Height Change %

1 Day

~ 0.02

3 Days

~ 0.02
14 Days~ 0.03
28 Days~ 0.03

Electrical resistivity

7 day

~ 17,000 Ω.cm

28 days

~ 25,000 Ω.cm
56 days~ 31,000 Ω.cm
90 days~ 37,000 Ω.cm

Application

Application Information

Mixing ratio

2.7 - 2.8 litres of water per 20kg bag

Layer thickness

min. 10mm / max. 100mm 

For application greater than 100 mm in depth, Add a clean, well graded and smooth aggregates to reduce the exothermic heat.

Flowability

Initial Flow

Flow Retention @ 30min

300mm

270mm

*Sika Test Method - Spread on glass

Pot Life

35 minutes approx. @ 23oC

Setting time

Temp

Initial Set

Final Set

23oC

~ 3 hrs

~ 4 hrs
Consumption

Yield

Yield per 20kg bag: 10.3 litres approx.

Quantity of 20kg bags per 1m3: 97 bags approx.
Application steps

EQUIPMENT

SikaGrout® Ultra must be mechanically mixed using a mechanical grout mixer or a suitable drum mixer. The grout mixer will reduce the chances of the mix becoming lumpy or aerated. Smaller quantities should be mixed in clean drum using an electric drill and spiral drill and spiral mixer at a speed of approximately 500 rpm. DO NOT MIX BY HAND or MIX PART BAGS.

MIXING

Add 2.7 litres of water per 20 kg bag.

Add the powder to the total water while mixing.

Mix until the grout appears homogenous (5-6 minutes). Allow to stand so any entrapped air can escape. Do not add more water to increase flow of the grout if a mix has stiffened due to time delays. If the grout is unworkable discard.

APPLICATION

SikaGrout® Ultra can be placed by either gravity flow or by pump. It is essential that proper placing on the job site is practised to ensure placement is completed without problems. Sufficient labour, grout and equipment must be present to ensure continuous placement.

 

Gravity:

Mixed grout should be poured one side of the void to avoid air entrapment. Grout is best poured over short distances to ensure this. Use a suitable header box, maintaining the grout head at all times to ensure continuous flow.

To facilitate grout compaction and top plate contact, use rodding, tamping or flexible strapping in short strokes while maintaining an adequate head of grout. Do not vibrate as this will cause segregation. Any adjacent machinery or equipment causing vibration should be shut down until initial set (approx. 3 hours).

Pumping:

When pumping SikaGrout® Ultra, ensure the pump is suitable for the grout consistency and for the distance and height it is to be pumped. A positive displacement pump is recommended. Place grout by pumping into the farthest corner, filling the space gradually. Ensure that air is not entrapped under the base plate.

CURING TREATMENT

Suitable curing methods such as plastic sheet, wet hessian, liquid membrane (eg, Antisol curing membranes) etc. must be used to protect the freshly applied grout from the drying effects of sun and wind. Curing must commence immediately after placement, and continue for at least 7 days. Curing is vital to the ultimate performance of grout as it allows optimum strength development and ensures tight contact with the baseplate.

CLEANING OF EQUIPMENT

Remove uncured SikaGrout-Ultra from tools and equipment with water. Hardened material can only be removed mechanically.

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